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   VQR systems (Voice Quality Restoration)


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HA200 & VQR

 

Untitled Document

VQR Technology

(Voice Quality Restoration)

 
 

This new technology, recently developed at Solidyne Labs, allows reconstructing the original human voice quality transmitted over telephone lines or Cellular Phone systems. This new invention, based on the Psychoacoustics science, uses the information contained into the 300 - 3.000 Hz band to decode it and restore to the near-original audio quality.
The Voice, once restored, has a 50-10.000 Hz bandwidth

The VQR process, in real time, with no delay, brings near-Studio audio quality. Due to the average audio quality of receivers, about 95% of the FM audience believes that the phone line transmission in not a remote event (that is; the audio quality perceived is like studio quality, for them)

VQR system is included at the Solidyne Hybrid model HA202-VQ

 

  
     

Please, hear the VQR improved audio quality of the telephone communication

 

 

A
Listen during 10 seconds the phone audio transmission using a plain telephone line from a Public Central. After 10 seconds, the VQR system is connected at the Radio Studio

B
Now, listen during 10 seconds the audio transmission using a Motorola Cellular Phone, with even reduced bandwidth. After 10 sec, the VQR system is connected at the Radio Studio
     


NOTE: If your PC do not have high quality louspeakers, with good bass response, we recommend you to hear this demo at your Radio Studio or send it to the air, at late night, in order to hear it at your home or with a good car receiver.
In order to download the MP3 files, use right button of the mouse and the option SAVE

Click here for more audio demos with Spanish speakers voices

Thanks to PRO FM Solutions, Holland, for providing us the speaker's voice

 


 

Phone Hybrid with VQR technology
model HA202-VQ

  
 

The Hybrid manages two phone lines with auto-level (AGC included). Or it can manage one phone line and one cellular phone.
Active Hybrid system with transformer balanced and floating phone inputs
Reflective illuminated pushbuttons

 

  
 



The VQR control panel has 3 sections:

a) NOISE improvement from 45 dB typical phone line to 70 / 80 dBA high quality Studio Microphone.

b) BASS restoration from 50 - 300 Hz. It is based on the vocal cord formant theory that allows to restore the low frequency information lost during the phone transmission

c) TREBLE restoration from 3.000 to 10.000 Hz. It uses the fundamental pitch of the fricative voice sound to restore the high harmonics

  

VQR system for 2300 consoles
 

If you use a Solidyne 2300 console, it is possible to add a 2330 VQR module.
This allows you to have this advanced technollogy inside the console, with the 3 VQR controls near your hands.

A complete LED display allows the operator to have a visual picture of the audio restoration